Filming and Effect Errors

At the end of Don't Look Back, Hiro returns from the future to the Tokyo subway car where he left at the end of Genesis. The filming of this scene involved blue-screening due to the transition between the explosion approaching the police station and Hiro standing in the subway. However, the shot of the subway used in the blue-screen background already includes Hiro with his arm raised, gripping a safety bar.

In the scene where Hiro is being interrogated by the police for allegedly killing Isaac, there is a typographical error in the subtitles. After "If you let me make a phone call" appears, watch out for "my English speaking friend will clear everthing up."

Takezo Kensei's name is spelled "Takezo Kensai" in the translated subtitles, even though the display case at the Museum of Natural History spells his name "Kensei". In all subsequent episodes, it is spelled as "Takezo Kensei".

When Matt tries to shoot Sylar, four distinct gunshots can be heard (although five bullets can be seen discharged from the gun). When the camera shifts, a total of five bullets can be seen in mid-air. When the camera shifts again (facing Sylar) only four bullets hover in mid-air. Also, in Four Months Later..., Matt tells Detective Fuller that four bullets to the chest would not stop him.

In a particular scene where Peter and Sylar were fighting in a Level 5 cell, Peter shouted "no!" before snapping Sylar's neck. Between the 2 actions, Angela can be seen hurrying into the cell. The reflection on the glass plate shows Peter turning his back already. When the scene cuts back to Peter, he had just turned around and did the exact same thing in the reflection.

In the final scene of episode Building 26, The Motel bartender said "mm mm" while shaking her head after Noah asks her if she knows any open apartment. While in the re-enactment of the opening scene in episode Cold Wars, she said "No", instead of just shaking her head.

Prop Errors

The address on the Cadillac's registration (37 Parker St) doesn't match the street number on Niki's curb (9734).

According to the registration, Niki's car is a '66 Caddy convertible with a V-8. The tail fins do not match the stock versions of either the DeVille or the Eldorado, the only two series offered in a convertible that year. In reality, the car is a 1959, not a 1966. Again, it's unclear whether this is an oversight or a clue.

The license number on Niki's car (329OCX) does not match the number printed on her registration (307RTH).

The NYPD detective in Isaac's apartment notes that Hiro is a member of the "Merry Marvel Marching Society", a Marvel Comics fan club that was disbanded in 1971. Given that Hiro's age is given as 24, he would have had to have joined eleven years before he was born. Of course, Hiro's a big enough comic fan that it's possible he made his own membership card.

The jacket images for the book Activating Evolution prop used in Heroes actually shows two different actors as Chandra Suresh, one in more western style clothing and one in the traditional Indian wardrobe. The photo with the turbanned Suresh is from the promo shown before Collision. The photo with Erick Avari as Suresh is from the aired version of One Giant Leap.

Jessica and Micah are shown playing Heavenly Sword for the Playstation 3. However, the episode takes place in late October or early November 2006, before the Playstation 3 was released (on November 17, 2006), and Heavenly Sword wasn't due for release until September 12, 2007 in the United States.

On Peter's passport, it shows one category with the designation as "F". In an interview, Aron Coleite and Joe Pokaski confirmed this was merely a production error. A replacement scene was shot with a corrected passport, but was not used, although Aron and Joe state that it will be corrected for DVD.

As Angela speaks to Nathan on the phone, she looks at a file with a picture of Danko and a newspaper clipping, the headline of which reads Civilain Deaths Reported in Angola Coup. "Civilian" is misspelled.

Reference Errors

The issue of X-MenHiro references, #143, does not actually contain the story he cites. He was referring to Days of Future Past, which appears in issue #141 and #142, however it is very much possible he just miscited a comic.

In a television news report on KVFD, it is mentioned that the train was registered to the Nuclear Regulatory Commission, but there had been no official statement as to what was the train's cargo. Interestingly enough, the U.S. Nuclear Regulatory Commission owns no trains, planes, or boats in reality. In fact Eliot Brenner, who works in the Office of Public Affairs for the Commission, complained of the inaccuracy. In response, Oliver Grigsby suggested that perhaps Laura Lancaster was wrong in her report.

Audrey claims that CODIS database determined the identity of the seared fingerprint found on Robert Fresco's body when in reality, she would actually be using the AFIS (Automated Fingerprint Identification Systems) database. CODIS (Combined DNA Index System) is used to determine the identity of a person using his or her genetic material, such as hair, blood, etc.

Sheriff Davidson's crossword puzzle uses "Kanyakumari" as the answer to a clue about Gandhi's burial place. Kanyakumari is not actually Gandhi's "burial place". Gandhi was cremated and his ashes were immersed in major rivers around the world. However, there is a monument in Kanyakumari, the Gandhi Mandapam, on the site where his ashes were kept on public display.

According to the NASA Catalog of Solar Eclipses four Solar Eclipses occurred in 1671, all of them only partial. The 1671 Sep 03 Eclipse was observable from Japan and reached a magnitude of 0.331, far from being total as depicted at the end of this episode.

Mohinder tells Bob that combining his own blood with Claire's causes his antibodies to become strong enough to defeat an enhanced strain of the Shanti virus. In reality, though, antibodies, being proteins and not cells, cannot "become stronger". Since they are simply molecules that interact with antigens such as viruses, they cannot be "strong" nor "weak".

Gretchen tells Claire that strange attractors are physical particles that shouldn't be together, but when they do, they become "super-strong". In reality, though, strange attractors are a mathematical concept related to chaos theory.

Continuity errors

While Powerless indicated that Sylar regained his abilities in an alley in NY after Nathan was shot, when Claire is watching a live transmission about the shooting Sylar is already there in Costa Verde.

Claire did not get drunk while consuming wine. However, Adam Monroe, also known as Kensei was obviously drunk in Lizards. This is obviously an error as both Claire and Adam have the same ability. However, this may be explained by the fact that Monroe had not yet discovered his ability when he was drunk.

When Claire talks to Noah and Nathan about the last book they read, she was holding the cover of Alice in Wonderland in her right hand. When the shot changes immediately to a different angle, she is holding it in two hands.

During the mind-link scene between Matt and Sylar, Charlie appears among the parade of victims, even though Hiro had already succeeded in not only keeping her alive, but also in having Sylar repair her aneurysm.

Other Continuity Errors

There are conflicting references as to Claire's age and birthdate. Before production began, a press release noted her age would be 17. In the televised episodes, a newspaperarticle reported Claire's age as 18 months during the fire on February 28th 1992, which would put her birth in August of 1990, and her age as 16. In The Fix (which takes place in October 2006), Claire says she is "almost 16"; this would suggest that her birth was in or after October of 1990. Further, Claire's birthmother tells Nathan that their daughter is now 16 (Run!). Claire is a junior (Distractions, Four Months Later...), and most juniors are 16 or 17. Her MySpace page indicates her zodiac sign as Aries (which would place her birthday between 21 March and 19 April) and her age as 19. In the commentary for Godsend, Jack Coleman states that Claire has just turned 16. In an interviewTim Kring stated that Claire is 16. At the 2007 San Diego Comic Con, Hayden Panettiere said her character is 15. Incidentally, Claire does drive (Collision); and the legal driving age in Texas is 16, though a driver can obtain a permit at age 15. In March 2007, Mr. Bennet gives Claire a Nissan Rogue for her birthday, which they note is "next month" (April 2007).

In an interview, Joe Pokaski and Aron Coleite commented on Daphne's power: "I brought up the mass = force times acceleration argument, but some people just don't believe in physics." However, mass equals force divided by acceleration, not multiplied by it.